<template>
  <!-- 头部 -->
  <header class="header">
    <!-- 头部的第一行 -->
    <div class="top">
      <div class="container">
        <div class="loginList">
          <p>尚品汇欢迎您！</p>
          <p v-if="nickName">
            <span>欢迎您</span>
            <span>{{ nickName }}</span>
            <a @click="logout">退出登录</a>
          </p>
          <p v-else>
            <span>请</span>
            <router-link to="/login">登录</router-link>
            <router-link to="/register" class="register">免费注册</router-link>
          </p>
        </div>
        <div class="typeList">
          <router-link to="center">我的订单</router-link>
          <router-link to="shopcart">我的购物车</router-link>
          <a href="###">我的尚品汇</a>
          <a href="###">尚品汇会员</a>
          <a href="###">企业采购</a>
          <a href="###">关注尚品汇</a>
          <a href="###">合作招商</a>
          <a href="###">商家后台</a>
        </div>
      </div>
    </div>
    <!--头部第二行 搜索区域-->
    <div class="bottom">
      <h1 class="logoArea">
        <router-link class="logo" to="/home">
          <img src="./images/logo.png" alt="" />
        </router-link>
      </h1>
      <div class="searchArea">
        <form action="###" class="searchForm">
          <input type="text" id="autocomplete" class="input-error input-xxlarge" v-model="keyword" />
          <button @click="toSearch" class="sui-btn btn-xlarge btn-danger" type="button">
            搜索
          </button>
        </form>
      </div>
    </div>
  </header>
</template>

<script>
import { mapActions } from 'vuex'
export default {
  name: "Header",
  data () {
    return {
      keyword: ""
    }
  },
  mounted () {
    //初始化绑定$bus的事件,接收search组件中面包屑删除的通知,然后把keyword清空
    this.$bus.$on("clearKeyword", () => {
      this.keyword = ""
    })
  },
  methods: {
    ...mapActions("user", ["getLogout"]),
    //跳转至search页的事件函数
    toSearch () {
      const query = this.$route.query
      this.$router.push({
        name: "search",
        params: {
          keyword: this.keyword || null
        },
        //在搜索框输入关键字之后如果同时还点击了三级分类列表进行搜索时，将query参数和params参数进行合并
        query
      })
    },
    //点击退出登录的事件函数
    async logout () {
      //因为这里调用的vuex里的getLogout方法是一个异步请求函数，加上await之后就会执行完该函数之后也就是清理完token和用户信息后才会执行跳转
      await this.getLogout()
      //退出登录后回到登录页
      this.$router.push("/login")
    }
  },
  computed: {
    nickName () {
      return this.$store.state.user.userInfo.nickName
    }
  }
}
</script>

<style scoped lang="less">
.header {
  &>.top {
    background-color: #eaeaea;
    height: 30px;
    line-height: 30px;

    .container {
      width: 1200px;
      margin: 0 auto;
      overflow: hidden;

      .loginList {
        float: left;

        p {
          float: left;
          margin-right: 10px;

          .register {
            border-left: 1px solid #b3aeae;
            padding: 0 5px;
            margin-left: 5px;
          }
        }
      }

      .typeList {
        float: right;

        a {
          padding: 0 10px;

          &+a {
            border-left: 1px solid #b3aeae;
          }
        }

      }

    }
  }

  &>.bottom {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;

    .logoArea {
      float: left;

      .logo {
        img {
          width: 175px;
          margin: 25px 45px;
        }
      }
    }

    .searchArea {
      float: right;
      margin-top: 35px;

      .searchForm {
        overflow: hidden;

        input {
          box-sizing: border-box;
          width: 490px;
          height: 32px;
          padding: 0px 4px;
          border: 2px solid #ea4a36;
          float: left;

          &:focus {
            outline: none;
          }
        }

        button {
          height: 32px;
          width: 68px;
          background-color: #ea4a36;
          border: none;
          color: #fff;
          float: left;
          cursor: pointer;

          &:focus {
            outline: none;
          }
        }
      }
    }
  }
}
</style>